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Old 04 Jan 2013, 02:56 PM   #1 (permalink)
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Tunning a WRX

Hello all and a happy new year.

I know there are a lot of threads on here about upgrade paths etc but was just wondering what is really needed and most importantly what you have had done and what figures and how it drives etc.

My 2004 wrx has had the following

Fuel pump
Full decat from turbo back
remap

And im getting 261bhp, im looking at around 300 -350bhp and doing alot research on here and scoobynet it seems 350 is the safest really to go on a wrx.

Ive been quoted

£700 td05-18g (apparently better than a 20g and prefered over the vf34
£269 Sti pink injectors (second hand)
£150 STI top mount intercooler (second hand)
£450 remap
£240 fitting all of above

Im happy to do this but also ive seen people who have not changed the intercooler and are still getting 330bhp and all is ok and people still getting 320bhp with td05 but keeping standard injectors.

Would like to know what you lot have done to your wrx and what bhp your getting.

Cheers all Lee
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Old 07 Jan 2013, 07:51 AM   #2 (permalink)
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Re: Tunning a WRX

biggest improvment by far you'll is the initial remap, the changes in responce etc (as you now know lol) are great.

the 18g is only prefered over the vf34 cos its cheaper and easier to get hold of. personaly i'd be looking at an sc36 as prefered turbo for that sort of power.
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Old 07 Jan 2013, 08:09 AM   #3 (permalink)
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Re: Tunning a WRX

lol lol scoobyclinic get their first 2013 sales mention woooooooooooooooooooow
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Old 07 Jan 2013, 11:04 AM   #4 (permalink)
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Re: Tunning a WRX

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Originally Posted by bugeye_bob View Post
lol lol scoobyclinic get their first 2013 sales mention woooooooooooooooooooow
doesn't mater who make it, or do you know a turbo in that range out performing it?

you can buy them from engine tuner if you prefer.
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Old 07 Jan 2013, 02:10 PM   #5 (permalink)
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Re: Tunning a WRX

Cheers all for replying, i take a look at the sc36.

My bug eye sti was mapped to 342bhp so i be happy to have that performance again, i just know that to go over the 300 mark i need a better turbo and intercooler and injectors for the the bigger turbo.

Just wondering what other people have upgraded too and what specs there getting, dont want to spend £700 on that turbo and then someone then says you should of got the sc36 for example for an extra couple of hundred pounds.
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Old 07 Jan 2013, 03:13 PM   #6 (permalink)
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Re: Tunning a WRX

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Originally Posted by UK300 Lee View Post
Cheers all for replying, i take a look at the sc36.

My bug eye sti was mapped to 342bhp so i be happy to have that performance again, i just know that to go over the 300 mark i need a better turbo and intercooler and injectors for the the bigger turbo.

Just wondering what other people have upgraded too and what specs there getting, dont want to spend £700 on that turbo and then someone then says you should of got the sc36 for example for an extra couple of hundred pounds.
you should have got the sc36,,, lol

all joking aside, have a read here.

scoobyclinics turbo's just got billet I mean better! - ScoobyNet


somewhere in the 4200 posts will be some sc36 graphs lol
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Old 08 Jan 2013, 09:17 AM   #7 (permalink)
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Re: Tunning a WRX

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Originally Posted by Tidgy View Post
doesn't mater who make it, or do you know a turbo in that range out performing it?

you can buy them from engine tuner if you prefer.
engine tuner just buy them from scabby clinic, I wouldnt pi ss on them if they were on fire.
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Old 08 Jan 2013, 09:37 AM   #8 (permalink)
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Re: Tunning a WRX

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educate yourself lee, plenty of information out there where the teller isnt on commission.
dont forget a nice TD05 18 or 20G(20 is probably a little big for you but still)


IHI VF TURBO INFORMATION

This Information is for reference only. Please, Please, Please do your own investigation before splashing out your cash. This information is fairly generic and will help you benchmark against other VF turbos, it wont apply directly you each car as each car is different. You have been warned!!

IHI turbo.
The VF series (VF22, VF23, VF24, VF29, VF30) are the most common direct replacement turbos. All VF-series turbochargers use the same roller bearing, water-cooled core assembly. The differences are in their wheels and housings to achieve different flows.

The VF22 has the largest potential for peak horsepower. In other words, in the IHI model range, the VF 22 supports the highest boost levels. It is capable of running up to 25 psi. Because it is a roller bearing turbo, turbo lag is minimal...the boost comes on around 3300 rpm. Expect to max out the VF22 somewhere in the 400-450 hp range.

The VF23 starts the middle ground. It comes on boost around 3100 rpm and is capable of running 20 psi of boost. Expect to max out the VF23 somewhere in the 300-350 hp range.

The VF 24 starts to come on around 2900 rpm and will significantly improve power through the mid range over the stock TD04 turbo. However, the VF 24 is only capable of running around 17 psi.

The VF23 and VF 24 are a great replacement for those who value driveability higher than maximum power.

The VF29 & VF30 delivers a very wide increase in torque over the standard TD-series turbos. It is important to note that the VF30 is not a roller bearing turbo.

VF22

This turbo has the highest output potential of all of the IHI VF series turbos and is the best choice for those who are looking for loads of top end power. The top end power however, does not come without a cost. The VF22 spools significantly slower than the rest of the IHI models due to the larger P20 exhaust housing and is much less suited for daily driving than some of the other models. Although the largest VF series turbo, the VF22 is not quite optimal for stroked engines or those who wish to run more than 20PSI of boost.

VF23

This turbo is considered a great all-around turbo. Like the VF22 it utilizes the largest P20 exhaust housing. This housing is mated with a smaller compressor housing of the of the VF24. This turbo is considered optimal in applications with range from mild to slightly wild. It does not have the same top end power of the VF22, but spools up significantly quicker.

VF24

This turbo shares its compressor housing with the VF23 however, this housing is mated with a smaller (P18) exhaust side. The smaller characteristics of this turbo allow it to provide ample bottom end power and quick spool. This turbo is very popular for Imprezas with automatic transmissions and Group N rally cars.

VF28

This turbo came standard on the STi Version 5. In terms of overall size, it is smaller than the VF22, VF30 and VF34, and about same size as the VF23.

VF29

This Turbo is nearly identical to the VF24, with the same compressor and exhaust housings. However the compressor wheel in the VF29 is has been changed slightly. The changes made to the compressor wheel in this model are generally viewed as improvements, and as such this unit is typically chosen over the VF24.

VF30

The VF30 is commonly considered the best bang for the buck turbo in the IHI VF series line. A relatively new model the VF30 features the same exhaust housing as the VF24 but a larger compressor side similar to the VF22. The combination of these two parts results in increased output potential without the lag associated with the VF22. Although it doesn't offer the top end supremacy of the VF22, the VF30 is a great compromise between these unit and the quicker spooling models.

VF34

The VF34 is nearly identical to the VF30, with the same exhaust housing and compressor. However the VF34 goes back to the ball bearing design, and in doing so achieves full boost approximately 500RPM sooner than the comparable VF30. The VF34 is the most recent IHI design and as such costs slightly more than its counterpart. Top end performance and maximum output are identical to the 30.

VF35

VF35 The VF35 has identical internals as the VF30 and it uses divided thrust bearings. However, the exhaust housing is a P15 which means this turbo will have fantastic spool characteristics. This turbo is standard on the new WRX Type RA. LIMITED SUPPLY.

VF36
Roller bearing version of the twin scroll VF37, also has a titanium turbine and shaft for even quicker spool. Same compressor housing as VF30/34, however twin scroll P25 exhaust housing provides slightly better top end output due to reduced exhaust pulse interference. This turbo is good for 400HP and used on JDM STI Spec C from 2003 onwards.

VF37 (thrust bearing)
Enter the age of twin scroll IHI turbos. Same compressor housing as VF30/34, however has a new twin scroll P25 exhaust housing that provides slightly better top end output due to reduced exhaust pulse interference. Twin scroll also provides better spool up for improved low down response over the VF30/34. This turbo is good for 400HP and used on JDM STI from 2003 onwards.

VF38
Twin scroll turbo with titanium turbine and shaft. Smaller compressor housing than VF36/VF37 provides tremendous spool up capabilities but less top end than VF36/37. The spool capabilities of this turbo are demonstrated on the JDM Legacy GT, which reaches peak torque at 2400RPM.

VF39
Single scroll turbo used on USDM STI and latest 2.5L STIs released internationally. Smaller than VF30/VF34.

VF42
Exclusive turbo to the S203/S204 models, this features a twin scroll design with a slightly larger compressor than the VF36/37 turbos and different turbine design (more blades). The VF42 is a roller-bearing turbo and is likely of similar size to the VF22 turbo, but with twin scroll exhaust housing for faster spool and superior top end performance due to reduced exhaust pulse interference.
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Old 08 Jan 2013, 01:07 PM   #9 (permalink)
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Re: Tunning a WRX

Quote:
Originally Posted by bugeye_bob View Post
engine tuner just buy them from scabby clinic, I wouldnt pi ss on them if they were on fire.
Not sure why your so against them or me , if you have a personal issue with Scoobyclinic or with any other tuner for that mater please take it up with them and keep it off the forum.

If you have technical arguments then back it up with facts if it is a technical point, not just abuse.
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